| Phase-locking factor in a motor imagery brain-computer interface. | |
| | |
MedLine Citation:
|
PMID: 23366525 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
A Brain-Computer Interface (BCI) attempts to create a direct channel of communication between the brain and a computer. This is especially important for patients that are "locked in", as they have limited motor function and thus require an alternative means of communication. In this scope, a BCI can be controlled through the imagination of motor tasks, i.e. Motor Imagery. This thinking of actions produce changes on the ongoing Electroencephalogram (EEG), such as the so called Event-Related Desynchronization (ERD), that can be detected and measured. Traditionally, ERD is measured through the estimation of EEG signal power in specific frequency bands. In this work, a new method based on the phase information from the EEG channels, through the Phase-Locking Factor (PLF), is proposed. Both feature types were tested in real data obtained from 6 voluntary subjects, who performed 7 motor tasks in an EEG session. The features were classified using Support Vector Machine (SVM) classifiers organized in a hierarchical structure. The results show that the PLF features are better, with an average accuracy of ≈ 86%, against an accuracy of ≈ 70% for the band power features. Although more research is still needed, the PLF measure shows promising results for use in a BCI system. |
| | |
Authors:
|
Carlos Carreiras; Luis Borges de Almeida; J Miguel Sanches |
Related Documents
:
|
12169255 - Overcoming confounds of stimulus blocking: an event-related fmri design of semantic pro... 11062325 - Reading time evidence for enriched composition. 12096875 - Knowledge of object manipulation and object function: dissociations in apraxic and nona... 21038265 - Naming a giraffe but not an animal: base-level but not superordinate naming in a patien... 16824135 - Intrinsic properties of human and murine memory b cells. 8131825 - Attentional demands for static and dynamic equilibrium. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 2012 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2012 Aug |
Date Detail:
|
Created Date: 2013-01-31 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
|
Languages: eng Pagination: 2877-80 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Brain-computer interfacing in discriminative and stationary subspaces.
Next Document: Segmenting human motion for automated rehabilitation exercise analysis.